Reciprocating window



septz?, 1949. `H, w, HACKER 2,483,005

RCIPROCATING WINDOW Filed oct. 24., 1944 the shoe.

In order to prevent the sides l3II--3I of the stile I3 from spreading due to the fact that the channel recess has been cut in the stile, there is :provided reenforcing means to prevent such spreading. This reenforcing means comprises a plate 34 at the top of the sash and la similar plate `at the bottom, said plates 'being fastened in any desired manner as by screws -35 that enter into the top rail (or bottom rail as the case may be) and hold the sides 30-3I .against spreading at the `[top and at the bottom of the sash. If the y s ash is yof such height las to require additional restantially the same |as that of the sash 5, each being in the Vform of rectangular frame in which a glass window pane is mounted in the usual manner. The width of the sash `I5 between the outer surfaces of its Stiles I2-I3 is substantially.

less than the width of the rectangular opening in the window frame I, a considerable clearance being allowed between the sash and the frame so that the stiles I2-I3 of the sash will not come in contact with the frame in the normal swelling or warping @of the Wood parts due to changing atmospheric or other conditions.

In each jamb 2--3 of the frame there -s mounted a VV--slide I5 for each sash. Each of the V- slides I5 extends vertically for substantially the full height of the frame opening, the two slides I5 on opposite sides of the frame constituting tracks or guides for the sash 6. Two other slides I5-I5 `constitute tracks for the sash 5. The stile I2 has a vertically extending V-shaped groove I'I formed therein which embraces the sides of the V-shaped slide I5. The angle of the V surfaces of the groove II is identical with the angle of the V surfaces of the slide I5. `The slide I5 in cooperation with the groove II rthus constitute cooperating male and female intertting V- shaped members.

The opposite stile I3 of the sash '6 has, centrally thereof, a rectangular channel recess 20 formed therein which extends for the full height of :the sash and is of a substantial depth. Within the channel is slidingly mounted a shoe V22. The shoe has ilat opposite lfaces 24-24 which are parallel surfaces lparallel tothe sides of the channel 2li in the stile I3. The end of the shoe 22 has a V-shaped longitudinally extending groove 26 formed therein at an langle exactly the same as the angle of the V-shaped slide I5 that iits into the groove 26. The shoe 22 is pressed against the V-slide I5A by a series of coiled springs 28 each of which enters -a circular bore 29 in the shoe and bears at lone end against the shoe and at the other end against the surface of the sash within the channel recess 20. Because of the plurality of the springs 28 the pressure of the shoe 22 againstthe V-slide will be uniformly distributed throughout the Ilength of The spring pressure of the shoe 22 'against its slide will fonce the entire sash in a direction leftward, as seen in Figure 3, so that the groove II is always maintained in firm sliding pressure engagement with its slide I5.

An import-ant lfeature of the invention lies in the fact [that the angle of the V of the slides or tracks l5 is exactly the same as the ang-1e of the V-groove inY the pressure shoe 22 and of the V-groove I'I. Because of this arrangement there is surface contact between the` shoes of the sliding sash and the stationary frame, with a uniformly distributed pressure between the slidable surfaces. This prevents binding of the sash in the :frame and prevents air leakage at the contacting surf-aces even though the spring pressure is not very great.

enforcement between the top and the bottom, sa transverse saw cut 36 is formed in the stile I3 (but not completely through the stile) and -a Ipair 'of' thin at met-al straps or braces 38 is inserted into said saw cut groove, the opposite ends of each brace bearing'against the outer opposite surfaces of the sash and being secured to and holding the parts 30-3I against spreading. The part'of the brace-receiving groove towards the outer edge `of the stile I3 may be filled as at 40 to prevent air leakage. The shoe 22 has a narrow cut therein the opposite sides of which embrace opposite sides of the reenforcing brace. While I have herein shown a brace 38 in the form of a pair of thin met-al strips, this is merely illustrative ofone form of bracing means, it being within the purview of the presentY invention to provide any other type of connection which will prevent spreading of the sides 30 3I of the channel 20.

From the description abovergiven it is apparent that I have provided al window frame and sash construction wherein there 4is no possibility of binding of .the slidable s-ashin the-frame even though the wood of the frame or of Athe sash, or both, may swell, shrink or warp ldue to changing atmospheric or other conditions. Furthermore, since the width of the sash is necessarily made appreciably less than the width of the sash-receiving -opening in the fname a sash constructed in accord-ance with the present invention need not be accurately made as to width and will nevertheless operate perfectly even though there is Van appreciable error, on the side ofunderSiZe, in the construction of the frame :as to its width. In compliance with the requirements of the patent statutes I have here shown and described a preferred embodiment of my invention. It is, however, to be understood that the invention is not limited to the rprecise construction here shown, the same .being merely illustrative of the principles of the invention. What is considered new and desired to be secured by Letters Patent 1. In combination, a window frame, a window sash slidably mounted in the frame, a slide memloer mounted in therframe and a pressure shoe member mounted in the sash and extending the u full length of the sash, the pressure shoe member having a V-shaped groove andthe slide member having a V-shaped projection entering the groove and of exactly the same Vangle asthe groove so as to provide two ilat surfaces of contact angular to each-other between each side of the sash and the frame, said projection and groove extending lengthwise of the frame, and springfmeans between the sash and the pressureshoe member carried thereby for constantly urging it in press ure Yengagement with theY slide member carried by the frame, saidcooperating engaging flat surfaces of contactvbetwen thezV-shaped projection andi` the correspondingY grooveV 'constituting means for-holdingthesash against movement transverselyof the frame, the Width of the sash being greater than the minimum Width of the frame opening regardless of the position of the pressure shoe member to prevent removal of the sash transversely of the frame regardless of the position of the pressure Shoe member in the sash.

2. In combination, a window frame, a window sash slidably mounted in the frame, a V-slide mounted in each side'of the frame, said sash having a cooperating and mating V-slide in each side thereof and extending the full length of the sash, one of each set of cooperating slides being a male member and the other a female member, the angle of the Vs in the sash being exactly the same as the angles of the Vs in the frame, one of the slide members in the sash being xed therein and the other slide member in the sash being movable therein towards and from the frame and constituting the female member of its set of cooperating slides, and spring means constantly urging said last mentioned slide member towards the frame, the cooperating surfaces of the mating slides being flat and in sliding surface to surface engagem-ent with each other, said cooperating V surfaces of the mating slides constituting means for holding the sash against.

movement transversely of the frame, the width of the sash being greater than the minimum width of the frame opening regardless of the position of the V slide in the sash to prevent removal of the sash transversely of the frame regardless of the position of the V slide that is mounted in the sash.

3. A window sash adapted to be slidably mounted in a window frame, said sash having a shoe-receiving channel recess in one side of the sash and extending longitudinally of the sash for substantially the full length thereof, said channel recess being of a depth which is a substantial fractional part of the width of the sash wall, reinforcing means extending transversely through the channel recess and through the portions of the sash which form opposite side Walls of the channel recess for preventing spreading or closing of the recessed portion of the sash, pressure shoe means extending substantially the full length of the recess and fitting snugly but freely between the sides of the recess and movable therein in a direction laterally of the sash andV substantially embracing the reenforcing means, and spring means urging the pressure shoe means outwardly of the recess in a direction laterally of the sash.

4. A window sash adapted to be slidably mounted in a window frame, said sash having a shoe retaining channel recess in one side thereof extending longitudinally of the sash for substantially the full length thereof, said recess being of a depth which is a substantial fractional part of the width of the sash Wall, reenforcing means extending transversely of the channel recess at the top and at the bottom of the sash for preventing spreading or closing of the Walls of the recessed portion of the sash at the top and at the bottom of the sash, pressure shoe means extending substantially the full length Vof the recess and fitting snugly but freely between the sides of the recess and movable therein in a direction laterally of the sash, and spring means urging the pressure shoe means outwardly of the recess in a direction laterally of the sash.

5. In combination, a window fram-e, a window sash slidably mounted therein, at least one of said frame and sash being of wood, means for sealing against air leakage between the sliding surfaces of the sash and the frame, said means comprising a V slide mounted in each side of the frame, said sash having a cooperating and mating V slide in each side thereof and extending the full length of the sash, one of each set of cooperating slides being a male member and the other a female member, the angles of the Vs in the sash being exactly the same as the angles of the Vs in the frame, the V in one side of the sash being in the form of a floating shoe which constitutes the female member of one set of c0- operating slides, and spring means bearing against the shoe and urging it to constant and uniform pressure engagementlwith the V slide carried by the frame, the cooperating surfaces of the mating slides being flat and in sliding surface to surface engagement with each other, said cooperating engaging V surfaces of the mating the floating shoe in the sash to prevent removal of the sash transversely of the frame regardless of the position of the floating shoe in the sash.

HORACE W. HACKER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 

